title: Three new serogroups of Neisseria meningitidis.
mesh_terms: D000372:Agglutination Tests; D003378:Counterimmunoelectrophoresis; D006386:Hemagglutination Tests; D005779:Immunodiffusion; D009345:Neisseria meningitidis / Q000145:classification* / Q000276:immunology; D012703:Serotyping / Q000379:methods / Q000592:standards